Search results
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Recent population estimates and trends in numbers of albatrosses and giant petrels breeding at the sub-Antarctic Prince Edward Islands
Abstract: The second mid-summer survey of surface-nesting seabirds at the Prince Edward Island ... Edward Island, mirroring a decrease of roughly 2% per year at Marion Island from 1998 to 2005, a decline ... that has since reversed. Numbers of grey-headed albatrosses Thalassarche chrysostoma on Marion Island ... (3% per year). The estimate of Indian yellow-nosed albatrosses T. carteri at Prince Edward Island was ...
Meeting Document : WG-EMM-10/P04 : Author(s): P.G. Ryan, M.G.W. Jones, B.M. Dyer, L. Upfold and R.J.M. Crawford
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Broadbandwidth total target strength measurements of Antarctic krill (Euphausia superba) from reverberation in a cavity
Abstract: Total scattering cross-sections (st) of Antarctic krill, Euphausia superba, were ... strengths (??10log(??4?) t TTS), were measured from groups of 57 to 1169 krill (average standard length ... omnidirectional emitter into one of three glass carboys containing groups of krill swimming in 9.3, 19.3 or 45.9 l ... of seawater (0.6??temperature??3.6 °C). Between each pulse, the krill moved within the fixed-boundary ...
Meeting Document : WG-EMM-02/49 : Author(s): D.A. Demer and S. G. Conti (USA)
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High densities of pterobranchs and sea pens encountered at sites in the South Orkney Islands (Subarea 48.2): two potential VMEs
Abstract: High densities of pterobranchs (Phylum Hemichordata: Class Pterobranchia) and sea pens ... encountered at sites on the shelf of the eastern South Orkney Islands. The details of these encounters ... , utilizing occurrence and abundance in bottom trawl catches, are provided. The distributions of standardized ... densities for these taxa reveal at least one station location for each taxa with anomalously high levels of ...
Meeting Document : WG-EMM-10/14 : Author(s): S.J. Lockhart and C.D. Jones (USA)
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Nesting behaviour of the icefish Chaenocephalus aceratus at Bouvetøya Island, Southern Ocean (CCAMLR Subarea 48.6)
blackfin) icefish Chaenocephalus aceratus that constitute the first substantive evidence of egg brooding ... and parental care by species of the family Channichthyidae. These novel observations are enriched by ... descriptions of the seafloor community that is impacted by fish nesting. Given the vulnerability of spawning ... recruitment to adult fish populations, we argue that appropriate management of icefish fisheries must exclude ...
Meeting Document : WG-FSA-04/26 : Author(s): H.W. Detrich III, C.D. Jones, S. Kim (USA), A.W. North (United Kingdom), A. Thurber (USA) and M. Vacchi (Italy)
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Abundance of Patagonian toothfish (D. eleginoides) at Macquarie Island estimated from tagging studies during 1995/96 fishing season
presents an analysis of a tag-recapture experiment carried during the Macquarie Island fishery for this ... the tags being released at various times throughout the season, and the effects of the removals by ... obtained for the pre-fishing abundance of the population in the season of 996 000 fish. However, this is ... adjusted to 901 000 fish if a small number of recovered but unreported tags are taken into account. Author ...
Meeting Document : WG-FSA-96/39 : Author(s): de la Mare, W., Williams, R.
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An iterative model to construct an age-length key to assess the age composition of a new fishery for Dissostichus eleginoides in Chilean waters
Abstract: Traditional calculation of catch age composition estimate requires that the age-length ... is capable of providing biased estimates of age distribution. By using the iteration algorithm is ... with the aplication of a single age-length key to all monthly length distribution using the nonlinear ... different from the one obteined by use of traditional method Author(s): H. Robotham V. and Z. Young U ...
Meeting Document : WG-FSA-92/23 Rev. 1 : Author(s): H. Robotham V. and Z. Young U. (Chile)
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Re-organisation of WG-FSA Report
restructure the WG-FSA report. In early 2004, the extend and nature of the work required was developed in ... consultation between the Conveners of WG-FSA and WG-IMAF, and the Chair of the Scientific Committee ... Everson to develop certain elements of the restructure (see SC CIRC 04/11 and 04/16). Dr Everson’s first ... task was to prepare a number of draft fishery reports for consideration by WG-FSA-SAM. This paper ...
Meeting Document : WG-FSA-SAM-04/06 : Author(s): CCAMLR Secretariat
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On interim distribution of the trigger level in the fishery for Euphausia superba in Statistical Subareas 48.1, 48.2, 48.3 and 48.4
Abstract: Taking into account the practice and current state of krill fishery in Area 48, Ukraine ... proposed to upgrade the Conservation Measure 51-07 in order to redistribute the trigger level of catch in ... additional precautional measures to avoid interceptance of krill fishery and preadors consumption needs ... establishing season limitations of close to shore fishery. New revision will still enable to follow the ...
Meeting Document : WG-EMM-16/56 : Author(s): G. Milinevskyi and K. Demianenko
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Intra-archipelago moult dispersion of southern elephant seals at the Prince Edward Islands, southern Indian Ocean
), 38 of which could be individually identified by resighting their tag numbers. The majority of the MI ... . The attendance rate of the known individuals at their natal island during the annual moult was only 40 ... PEI, and 80 ± 4% for the simulation. Seasonal and annual absences of seals from MI violate the ... ‘homogeneity of capture’ assumption of mark–recapture models. When multiple sightings during any year are ...
Meeting Document : WG-EMM-10/P16 : Author(s): W.C. Oosthuizen, M.N. Bester, P.J.N. de Bruyn and G.J.G. Hofmeyr
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Lessons from CCAMLR on the implementation of the ecosystem approach to managing fisheries
Abstract: The Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) is ... can be developed to decide on spatial management strategies for fisheries so that predators of target ... species are not disproportionately affected as a result of spatial and/or temporal dependencies of ... assessing the status of target species and their predators, but also in designing cost-effective management ...
Meeting Document : WG-EMM-12/P06 : Author(s): A.J. Constable